Sash construction



March 3v, 1931. w. E. KELLER' 1,795,028

' sAsH CONSTRUCTION Filed Sept. 16, 1929 Patented Mar. 3, 1931 i UNITED STATES PATENT ori-ICE WALTER E. KELLER, F ELKHART, INDIANA, ASSIGNOR T0 THE ADLAKE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS l SASH CONSTRUCTION Application iled September 16, 1929. Serial No. 392,771.

This invention has to do with metal window sash, and is particularly concerned with the manner in which the frame members are connected together at the corners.

The primary object of the invention is to provide an improved corner connection which is tight, strong, rigid and inconspic'uous, and will permit the sash to be readily taken apart for glazing.

Otheil objects and advantages of the inven- .tion will be apparent to those skilled in the art upon a full understanding of the construction, arrangement and operation of the improved connection.

One form of the invention is presented herein for the purpose of exemplification, but it will of course be appreciated that the invention is susceptible of embodiment in other structurally modi-fied forms coming equally within the scope of the appended claims.

In the accompanying drawing: Fig. V1 is a fragmentary front view of a sash equipped with the corner connection of the invention;

Fig. 2 is a vertical section, taken through the median plane of the sash;

Fig. 3 is an enlarged horizontal section, taken on the line 3 3 of Fig. 2; f

Fig. 4 is an enlarged vertical section, taken on the line 4 4 of Fig. 2; and

Fig. 5 is a vertical section, corresponding to Fig. 2, showing the parts in separated relation before being assembled.

In the sash shown in the drawing, the adjoining ends of the frame members 10 and 11 are mitered and are interiorly reinforced by correspondingly mitered lining members 412 and 13 which are soldered or othewise se- 40 curely vheld in place. The lining members are of inwardly opening channel formationA and the mitered ends thereof are set inwardly a little from the mitered ends of the frame members whereby to insure a closed joint between the latter at 14.

' The frame members 10 and 11 are detachably fastened together by an L-shaped connecting member 15. One leg 16 of the connecting member consists o two laterally spaced parallel strips 17 which have inturned tures 23 in the arched back 20 of the leg 19.

lVhen the screws 21 are inserted through the apertures 22 into the apertures 23 and drawn up, the mitered end of the frame member 10 will be forced longitudinally against the mitered end of the frame member l1 to produce a closed joint therebetween, and the sides of the leg 19 will be wedged outwardly against the sides of the lining member 13 by the flattening action of the screws upon the arched back 20 of the leg, resulting in the production of a tight, strong and rigid corner connection which may be easily taken apart for reglazing by merely removing the screws In a plying the present invention to a sash, two o the L-shaped connecting members 15 are used. The two connecting members are preferably mounted in the ends of the top rail of the sash, with the attaching legs 19 thereof extending `downwardly from the ends of the top rail in parallel relation to each other for insertion within the upper ends of the Stiles ofthe sash, which arrangement permits a pane of glass to be inserted easily into the upwardly opening three-sided frame presented by the stiles and bottom rail upon removal of the top rail, and also serves to conceal the attaching screws 21 within the vertical guides in which the stiles of the sash are adapted to slide. It will be appreciated, however, that various other arrangements of the corner members might be employed. For instance, the sash might be made separable at diagonally opposite corners, in which case one of the connecting members would be permanently attached to one ofthe rails while the other connecting member would be permanently connected to one of the Stiles, withlthe atconnection "between adjoining ends of two tu- -leg o tachinglefs 19 of the members still, however,- in aralle relation to each other.

ile the particular sash shown in, the drawings is reinforced adjacent the corners with lining members,'it willfbeunderstood that the lining members maybe dispensed with provided the sash is suilic'iently rigid in construction to withstand without distortion Y the coupling-stresses applied by the connectmembers. I claim ing two tubular frame members, consisting of an L-shaped 1- connecting member, one leg oziA which is secured in the end of one frame mem.- .ber and the other. leg of which isresiliently exansible and is removably positioned in the en of the othergframe member.

2. In metalsash construction, alseparable bular frame members, consisting of a one- ,piece L-shapedconnecting member,4 one leg of which is permanently secured in the end of one frame member and the other leg of whichvis removably positioned in the end of the yother frame member, and means for expanding the last mentioned lleg of the connecting member whereby to' produce a tight connection..

3. In metal sash construction, 'a separable `connection between adjoining mitered ends of `two tubular framemembers, conslsting of a one-piece L-shaped connecting member, one leg of which is permanently securedin the end of onefframe member and the other leg of which is removably positioned in the end of the other frame member, and means'for forcing the last mentioned leg of the comlecting member laterally toward the outer edge ofthe frame member in which it is positioned whereby to draw the mitered ends of '.the

1. In metal frame construction, a separ' able connection between adjoining ends. of.-

- wall of the frame member, an screws extend-k ing thro'igh the outer wall ,of said frame vmember'intoen agement with said arched portion for slig tly flattening the latter to .spread apart the edges thereof.

` In witness whereof I have hereunto subscribed my name.

. l WALTER E. KELLER.

frame members together to produce a closed ljoint therebetween and at the same time expand said leg whereby to produce a tight' connection.

v 4. Inametal sash construction, a separable connectlon between adjoining mltered ends of two tubular frame members, consisting -of a one-{piece L-shaped connecting member, one

which isy secured in the' end ofl one frame member and the other leg of which vis removably positioned in the end of the other frame member and is of inwardly opening channel formation with areentrant 'groove in the back thereof, and one or more screws extending throu h countersunk apertures'in the outer edge o the frame member in which the legof channel formation' is positioned into threadedapertures inthe back 'of such leg, whereby to draw the back, of the legtolward-the outer edge of the frame member` and at the same time force the sides of the leg towardsthe sides of the frame member. 

